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Desk top PC will not start

ARI 17 537 United Kingdom
15 Aug 2016 7:15PM
PC with Win 7, built over six yrs ago. Turned it on and the pc was just clicking on and off. The lights went on and off in sycnchrony with the clicks..It did not respond to any thing and had to shut down at the mains
There have no problem wit it over the years.
Any advise to proceed

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Paul Morgan 18 19.4k 6 England
15 Aug 2016 7:21PM
Probably the hard drive if all your getting is clicking.

Have you got a spare SSD or hard drive you can connect to test.
Chris_L 5 5.3k United Kingdom
15 Aug 2016 7:21PM
What checks have you done so far? For example have you checked that the internal fans are working, they work harder in the summer. Have you blown all the dust you can out of the system. You can disconnect some components from the power supply (such as DVD drives) you can disconnect all external USB items then try again.

Strip the system back to the bare essentials and troubleshoot.
15 Aug 2016 7:58PM
Could be any of a number of issues. Faulty power supply, hard disk, motherboard, memory etc. As Chris_L says, you really need to try isolate the problem and this can only be done by going through a fault-finding routine.

The first (and free) thing you should do is give it a thorough clean out then check the capacitors (cylindrical components) on the motherboard to see if any of them are bulging at the top. This could mean that the motherboard is faulty. Also check all connections are tight.

Paul Morgan 18 19.4k 6 England
15 Aug 2016 8:11PM

Quote:Turned it on and the pc was just clicking on and off

Just re-read you post, so your saying the Pc clicked on then clicked off, its not the hard drive then.

It could be the PSU, the motherboard and a whole lot of other things.

First thing you should do is open the case and give it a good clean out and check for foreign bodies that may have fallen in, anything that could cause a short etc, unplug devices then plug them back in and check all wired connections, the umbilical`s from case to motherboard etc for loose or missing connections.

If you still getting no joy then it will probably be your PSU or motherboard (or something connected like ram or cpu)

User_Removed 5 328 United Kingdom
15 Aug 2016 8:25PM
Check your clock battery, if your system has one - if flat it may be srewing up the bios. Should be located on mainboard somewhere....
jembo 15 139 United Kingdom
15 Aug 2016 10:39PM
This may seem odd, but....

Noticed afer we had a power cut, when trying to boot the PC it wotld try and boot, and fail, and retry, and fail, and retry etc etc etc. A never ending cycle of trying to boot and fail.
Purely by accident I discovered that if I disconnected the monitor from the back of the pc and booted, it would start up and NOT try to reset. I plugged the monitor in during the boot up process and vwah-la! PC went through normal boot process and did what PC's do. Problem solved.
thewilliam 11 6.1k
15 Aug 2016 11:23PM
We had a similar thing a couple of years back.

It turned out that the computer had been set to restart automatically when power was restored and there was another power cut during the start-up. Our local repair man sorted the problem quite cheaply.

I then made sure that all computers were set so that they didn't start-up on restoration of power.

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