Unstable Windows PC - Fixed

[Mike Farley]

I mentioned in a recent post that my desktop PC had become unstable. Initially the problem had been a failure to come out of sleep mode, but it also started freezing while I was using it and required a few attempts to reboot. As I recounted, re-installing the graphics driver seemed to work for a few days before the problem returned.

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Given that nothing had changed in respect of software (I leave Windows Update turned off*), I suspected a hardware issue. Worst case scenario was that the motherboard was the cause. Given that it is ancient in computing terms at four or five years old, replacing it would require a new CPU and cooler, graphics card and memory as well. I could retain the disks, power supply and case, but overall it would still entail an unexpected expenditure in the region of £600. Granted, though, I would be getting a faster PC for the money.

Before I undertook such a step, there was one thing to try. Computers are a bit like Lego and all the parts come separately, being designed to slot together. That applies whichever company makes them, although the larger ones such as Apple or Dell will have at least some custom made components. Sometimes connections can degrade and simply removing a part and putting it back can remake it. The graphics card has two parallel rows of small connections and is particularly susceptible, so I tried that first. I found that the heatsink was full of dust, which might affect the cooling, so whilst I had it out I took the opportunity to clean it. Hey presto, when everything was put back together it all worked and there have been no further problems. Had it not succeeded, I would have reseated all the other connections, starting with the memory.

I post this here in case anyone experiences something similar and consequently is thinking of buying a new computer. It is not difficult to do, although taking some simple precautions is advisable. Electronic components are easily damaged by static, so I plugged the computer into the mains with the socket turned off to ensure it would be earthed, but not powered. I also had an anti-static wristband and used an anti-static mat for good measure when I cleaned the graphics card. Wristbands are inexpensive and I would reccomend using one, although it is also possible to reduce static by touching something which is earthed, such as a radiator, for around 30 seconds.

* Occasionally updates from Microsoft have been known to cause problems, although I am not aware of any issues more recently. Which is just as well, as Windows 10 removes the option to choose which updates to take.

[Peter Boughton]

Yep, it can be amazing the amount of dust that can clog up fans and heatsinks - and the difference it can make to the stability of the computer.

One important point for anyone doing this: do not use a vacuum cleaner to try and suck away dust, since the nozzle can build up a static charge.

[Mike Farley]

One important point for anyone doing this: do not use a vacuum cleaner to try and suck away dust, since the nozzle can build up a static charge.

I used an insulated screwdriver while wearing an anti-static wristband.

[davidc]

Be careful using cans of compressed air too, the cooling effect when the air decompresses can condense water on your electronics.