Possible PSU/Mobo/CPU Problem.

Ariat

Honorable
Oct 19, 2013
4
0
10,510
Hello folks, first time poster and generally I don't need advice with things like this but there's a first time for everything.

I've just built a new computer a few months ago, however every now and then everything freezes. It's working fine, then zing, stops responding, or the screen gets all hashed and it restarts. It doesn't happen that often, but it's still worrying. I will provide any information you guys think you'll need, as I've built several computers and they've never had problems before and this problem is beginning to annoy me.

Only possible problem I can think of is I was recommended a 1000w PSU, however I assumed that was just sales talk and got a 500w instead and aside from a few jumping voltages early on (12V hit 14 at some point, however it's not happened again recently,) everything's performed absolutely fine.

The system is overclocked, from 3.80Ghz to 4.3Ghz, however the freezing/shutting down still occurs when not OC'd.
I've had a look at the event viewer, and these power failures/freezes seem to be listed as unexplained shutdowns.

Sys Specs:
Mobo: AMD 990FX
CPU: AMD FX-4300 Quad core
GFX: AMD Radeon HD 6450
8Gb Memory
Win7 Home prem.
2 HDD, one a SSD boot disk and the other with all my crap on.

Also I'm thinking of upgrading to a different graphics card at some point, although I'm not planning on an SLi or crossfire setup. Would you recommend getting a larger PSU?
 

Ariat

Honorable
Oct 19, 2013
4
0
10,510
2x 4Gb DRR3, 800Mhz Bandwidth, Crucial Technology.
Part number: CT51264BA160B.D16F


As to current voltages taken from AI Suite,
Vcore: 1.404
+3.3V: 3.312
+5V: 4.992
+12V: 12.2
+VDDA: 2.508.

Thanks for the quick response btw, it's appreciated.
It's almost midnight here though, so I'll be on tomorrow to check any replies.

 

Ariat

Honorable
Oct 19, 2013
4
0
10,510
Raising the DRAM voltage to 1.55V Does seem to have increased my system stability, however I'll still need to observe this for a few days, maybe even a week or two just to make sure.

Looks like the UEFI BIOS autoclocking was incrementally increasing the FSB and CPU Voltage however wasn't increasing the DRAM voltage to compensate.

For now, I consider this solved. Thank you very much Tradesman1, your help and advice was invaluable.
 

bertan

Honorable
Jul 11, 2012
28
0
10,530


 

bertan

Honorable
Jul 11, 2012
28
0
10,530
Sorry to hear that irritating problem Ariat.I would check all the connections one by one when Upgrading the PSU.Modding is a joy for me as I experiment!Buy the biggest ATX case ,attach some giant washers with screws to raise it several inches Off the floor!Place the case on ceramic tiles.Add Extra Cooling to the HDD ,if not using SSD do not need it-Upgrade the stock Graphics Card Heatsink+Fan !Most makes are listed for Upgrading ! Place Fans inside the Case to keep maximum ventilation.U can find a side cover with fans or create your own cooling ideas!I used PLASTIC (please do not use metal)Large Heavy Duty Spring Clamps,4 for a quid -attached to the case with drilled holes tied with cable ties + used 4 pin CPU fan from spare stock to cool Memory ! Juice from the PSU should be sufficient though!
In the Bios what does the heat/power usage indicate ? What make is the PSU ? Definitely UnderPowered and U may damage your system with a cheap PSU! Do not wait for disaster !Shop around! To give an example I have AMD FX8150 on1 pc and The Corsair 850W (5 years guarantee)barely manages it.Intend to change it to an Antec 900W (5 years guarantee) ,bought months ago! Good Luck with your Troubleshooting exercise!