PC not booting acting strangely

Carlo_15

Prominent
May 24, 2017
5
0
510
If anyone can help it would be appreciated.

My PC is old 2005 built myself never had any problems with it until a few weekss ago.
Firstly the date and time was wrong in Windows and I had to set it manually.

I thought it was the cmos battery on the way out.

The other day it was starting and it didn't boot very fast and turned off. I tried to turn it back on and the fans spin all off them including PSU and CPU and GPU. But after a few seconds turned off I pressed power button again and they started for even less time and again even less and fourth time nothing.
There are no beeps and nothing on screen.
I read about the cmos possibly being the issue so replaced the battery and reset cmos. Still did not work.

The odd thing is the longer I leave it off the further it gets into booting. I tried leaving it plugged in but PSU switch to off a longer time and when I turned it on it booted to the cmos set up screen but before I had time to do much it turned off. I'm baffled if anyone can help me please thanks.
 

Carlo_15

Prominent
May 24, 2017
5
0
510


Hello it's an A8N sli deluxe with 8gb ram.

Graphics card is working as far as I can see as it does show booting on monitor if I have done the leaving it off for ages routine.

It's worked for 12 years no real problem then suddenly this, I have never come across this very odd leaving it off longer allows it to boot further issue before just baffles me.

I know you and another reply say it's possibly the power supply just to know the enermax psu had a cool down feature and the fan stays on after it does this shutdown.
 
A part that cools slowly and can only take a small amount of heating. Got any fans not working? A motherboard chipset fan possibly not working. Not turning back on right away makes me thing PSU.

As old a PC you may be better off buying a very low end new system. You are sure to see other parts fail given the age. Here is a build with a PSU that can handly any single video card in reason.
PCPartPicker part list / Price breakdown by merchant

CPU: Intel - Pentium G4560 3.5GHz Dual-Core Processor ($59.99 @ B&H)
Motherboard: MSI - B250M PRO-VDH Micro ATX LGA1151 Motherboard ($69.99 @ SuperBiiz)
Memory: G.Skill - Ripjaws V Series 8GB (1 x 8GB) DDR4-2400 Memory ($56.99 @ Newegg)
Storage: Western Digital - Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($48.33 @ OutletPC)
Case: Corsair - SPEC-03 Red ATX Mid Tower Case ($39.99 @ Newegg)
Power Supply: SeaSonic - S12G 550W 80+ Gold Certified ATX Power Supply ($61.49 @ OutletPC)
Total: $336.78
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-05-25 12:33 EDT-0400
 

Carlo_15

Prominent
May 24, 2017
5
0
510


It is coming up with the chipset fan error but if I remember as it's so long ago since I built it that I couldn't ever get the board to detect it so I disabled the warning in the bios. That is the only beeping I get if I leave it off enough.
The cpu fan is spinning and all case fans are as well.
 

Carlo_15

Prominent
May 24, 2017
5
0
510


Hello yes it was the power supply got anew one today wired it back up and its working as sweet as before. Thanks for the help.

By the way the paper clip test showed its fans were still working but when I took it to a nearby shop the output dropped off drastically after turning it on.

 

Carlo_15

Prominent
May 24, 2017
5
0
510


Hello it was the power supply thanks, fans worked with paperclip test but output dropped quick after turning it on, bought new power supply and it is running sweet now thanks.

 

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