A work computer will not turn on: quick checks before you call

A work computer will not turn on. What can you safely check yourself?

Everything on this list is safe for a non-technical person and none of it involves opening the case. Work down it in order and stop when the machine comes back.

1. Try a different wall outlet, ideally on a different wall. Not another socket on the same power strip. Some office circuits are switched at the wall or fed from a breaker that has tripped.
2. Check the power strip or UPS itself. Strips fail, and a UPS whose battery has died often stops passing power at all. Plug the computer straight into the wall as a test.
3. Reseat the cables. Push the power cable firmly into the back of the desktop and into the wall. On a laptop, check that the charger is connected at both ends and that its brick has a light.
4. Look for any sign of life. A light on the case or keyboard, a fan spinning for a second, a beep, a click. Note exactly what happens when you press the button, because that detail decides the diagnosis.
5. Rule out the monitor. Confirm the monitor has its own power light, that its cable is firmly in at both ends, and that it is set to the right input. A monitor left on the wrong input shows a black screen while the computer runs perfectly.
6. Take the laptop out of the dock. Connect the charger directly to the laptop and connect the screen directly if you can. Docking stations fail more often than laptops do.
7. Do a hard reset. Hold the power button down for ten full seconds until everything is off. On a laptop, unplug the charger, hold the power button for thirty seconds, then reconnect and press once.
8. Disconnect everything else. Unplug USB drives, printers, hubs and a second monitor, then try again. A faulty peripheral can stop a machine from starting.
9. Listen and smell. Repeated beeps, a rhythmic clicking from a hard drive, or any burning smell. If you smell burning, unplug it and stop.

Write down what happens at each step. When you call, the sentence "no lights at all, even with a different outlet and no dock" saves half the diagnosis.

What do the different symptoms actually mean?

Machines fail in patterns. Match what you see to this table for a good idea of what is wrong and whether it is worth fixing.

If several machines in the office are failing rather than one, the cause is more likely to be shared: a bad update, a power event, a failing circuit or heat in a small room. That pattern is worth reading about in office PCs crashing or freezing before anyone starts replacing hardware.

Is it the computer, the monitor or the dock?

Prove it with a swap rather than a guess. All three fail, and two of the three are far cheaper to replace than the one people usually blame.

The monitor. Does it have a power light of its own? Does it show a message like "no signal" or "check cable" when the computer is off? A monitor that shows nothing at all, not even a message, is a dead monitor. Test by plugging the same monitor into a colleague's machine, or by plugging your machine into a different screen.

The dock. Docking stations are the single most common cause of a laptop that "will not turn on" in an office. They fail quietly, they stop delivering power, and they hold the display output hostage. Take the laptop out, connect the charger straight to it, and see whether it comes to life. If it does, the dock or its power supply is the fault and the laptop is fine.

The cables. Video cables fail at the connector, especially where a laptop is unplugged and replugged twice a day. Try a different cable before condemning anything expensive.

The computer. If a known-good monitor, a known-good cable, a known-good outlet and no dock still produce nothing, then it is the machine. At that point you want the model number and the service tag or serial, which is on a sticker on the base or the back, because that is what determines whether it is still under manufacturer warranty and what parts it takes.

What should you not do to a computer that will not start?

Some well-meant actions destroy the thing you were trying to save. These are the ones I see most.

• Do not reinstall Windows, reset, or accept a "clean install" from anyone until the data is off. This is the most expensive mistake on the list, and it is usually made in the first hour by someone trying to be helpful.
• Do not keep power cycling a clicking drive. A mechanical drive that clicks is physically damaged and every additional spin-up makes recovery less likely and more expensive.
• Do not open a laptop to "check the memory" unless you know the model. Modern business laptops have soldered components, glued batteries and delicate connectors, and a cracked ribbon cable turns a repair into a replacement.
• Do not use it if it smells burnt or has been near water. Unplug it, leave it, and say so when you call.
• Do not let it sit for a week. If the drive is dying, time is not neutral. If the machine holds the only copy of anything, this is urgent even though nothing is on fire.
• Do not hand it to a consumer repair shop if it holds client data without asking how they handle confidentiality. A law firm or medical office has duties that a mall counter has never thought about.

The one thing worth doing immediately is establishing where that person's files actually live. If everything was in Microsoft 365, SharePoint or Google Drive, this is a hardware inconvenience and nothing more. If the work lived on the desktop of that machine, the priority changes completely.

Repair or replace: how do you decide on a business machine?

Count the total cost, not the part. A repair that costs a modest sum but takes three days of someone's productivity is not cheap. Use these four questions.

A few practical notes. Business-class machines from Dell and Lenovo often carry multi-year onsite warranty coverage that the office has forgotten about, so check the service tag on the manufacturer's site before paying for anything; the part and the labour may already be covered. A failed drive on an otherwise good machine is nearly always worth fixing, and it is a good moment to move to a solid-state drive if it still has a spinning one. Consumer laptops bought from a big-box store are usually not worth repairing past the warranty, which is the argument for buying business-class hardware in the first place, laid out in buying and supporting Dell and Lenovo business computers.

My labour on this is hourly and published: $100 per hour remote and $150 per hour onsite during business hours, $150 and $225 after hours, with a one-hour minimum. Parts are quoted before I buy anything. If the honest answer is that the machine is not worth repairing, I will tell you that instead of billing you to find out slowly.

How is data recovered from a computer that will not boot?

Usually by reading the drive somewhere else. A computer that will not start is not the same thing as a drive that has failed, and in most cases the files are perfectly intact behind a broken machine.

The normal process runs like this. The drive comes out of the dead machine and connects to a working one through an adapter or an enclosure. The files are copied off to a safe location and verified. Then the original machine is repaired or retired and the data is placed onto the replacement, along with the user's profile, signatures, saved passwords and any locally installed applications' data.

Three things complicate it, and they are worth knowing in advance.

• Encryption. If the drive is encrypted with BitLocker, which is common and correct on business laptops, the data cannot be read in another machine without the recovery key. That key can be stored in your Microsoft 365 tenant or in a printout in a drawer. If nobody has it, the data is genuinely gone, and the encryption is doing exactly what it was designed to do.
• Soldered storage. Some thin laptops have the storage soldered to the board, so there is no drive to remove. Recovery then depends on the board being alive enough to boot from a USB stick, and if it is not, the job goes to a specialist lab at a much higher price.
• Physical drive failure. A clicking or unresponsive drive needs a cleanroom lab, which is an expensive and uncertain service quoted per job. This is the one case where a backup is the difference between a hundred dollars and several thousand.

The lesson people take from a dead computer is nearly always the same. If the files had been in OneDrive, SharePoint or a monitored backup, none of this would have mattered. Recovery of already-deleted or already-lost files follows a different path, covered in what can be recovered when someone deletes important files, and the prevention side is standard backup and disaster recovery work.

How do you get that person working again today?

Separate the person from the machine. The repair can take days; the employee cannot. In a properly set up office this takes under an hour.

If your business runs on Microsoft 365 or Google Workspace, the person's identity is not tied to that hardware. Sign them in on a spare machine, or temporarily on a colleague's, and their mail, files and settings follow them. That is the whole point of cloud identity and it is the single biggest reason to move small offices onto it.

Practical steps for the day itself: put them on a spare or loaner machine, confirm they can reach the line-of-business application, forward their desk phone if it is tied to the physical desk, and note anything that only existed on the broken computer so it goes on the recovery list. If they had locally installed software with a per-device license, check whether the license has to be released from the old machine before it will activate on the new one, because that trips people up.

Keeping one spare machine on a shelf, already set up and updated, is one of the cheapest business continuity measures there is. For an office of ten or more, it pays for itself the first time it is used.

How do you stop one dead computer from stopping work?

Four habits, none of them expensive, remove most of the pain.

• Nothing important lives only on a computer. Redirect the desktop and documents folders into OneDrive or a shared drive so a dead machine is never a data event. Then verify it is actually working, rather than assuming.
• Know the age of every machine. Keep a simple list of make, model, service tag, purchase date and who uses it. Replace on a rolling schedule of about four to five years rather than replacing everything in one painful year.
• Buy business-class with a real warranty. Onsite next-business-day coverage from the manufacturer turns most hardware failures into a phone call and a technician with the right part, at a fraction of the cost of emergency labour.
• Keep one configured spare. A machine on a shelf, updated quarterly, that anyone can be signed in to the same morning.

Those are the sort of unglamorous items that ongoing managed IT support takes care of quietly, along with monitoring drive health so a failing disk is replaced during a scheduled visit instead of during a deadline. Machines still fail, because all machines eventually do. The difference is whether it is an afternoon or a week.

Who repairs business computers in Dallas, and what does it cost?

I do, on an hourly basis with no contract. My name is Anthony Omini and I own Cross River Tech, a small IT company in Dallas; you deal with me directly, and my team handles the routine work behind me. For a machine that will not start I usually begin on the phone, because half the causes are ruled out by questions rather than by hands, and there is no reason for you to pay for a visit that a two-minute conversation makes unnecessary.

When hands are needed I come to your office rather than asking you to unplug everything and carry it somewhere. I cover Dallas–Fort Worth onsite and support businesses remotely anywhere in Texas. Rates are published: $100 per hour remote and $150 per hour onsite Monday to Friday, 8 AM to 5 PM Central, and $150 remote or $225 onsite after hours, weekends and holidays, with a one-hour minimum. Parts are separate and quoted before purchase. Full details are on the hourly IT support page.

Two honest limits. I do not run a cleanroom, so a physically damaged drive goes to a specialist lab and I will tell you what that involves before you commit. And I will not talk you into repairing a machine that should be replaced; on an old computer with a serious fault, the money is better spent on hardware that will not do this again next quarter.

If your office has no spare machine, no device list and no backup of what sits on people's desktops, get in touch on a quiet day. Fixing that takes an afternoon, and it is the difference between a dead computer being an errand and being an emergency.

Questions people ask

Written and reviewed by

Anthony Omini, founder of Cross River Tech

Over 15 years in IT across many industries, now running Cross River Tech, a small owner-led managed IT company in Dallas. Every article is written from his own client work and checked by him before it is published.

Machine dead and someone cannot work? Call (214) 612-7080. I will narrow it down on the phone and come out only if the fix needs hands.

Ask Anthony(214) 612-7080About Anthony