3.3V Fail error in bios

[sswats]

I have a gigabyte DS3P with an E4300 running at 300fsb x 9 (2.7ghz). Tagan 480W PSU and 8800GTS.

Just had a power outage and my PC obviously lost power (no UPS).

When i tried to switch back on, I'd get a weird beep which I haven't heard before and nothing.
a few more tries, the beep changed but still nothing.

eventually it managed to boot but it had lowered the clock speed of my E4300 back to default. all the other settings seem to stay the same.

I go into the bios and check the PC health and next to 3.3v it says "Fail" in bright red.
I tinkered with the fsb voltage and 3.3v went back to "OK".
tried to boot windows it crashed and the 3.3V went back to fail.

My clock speed is back down to 1.8 and 3.3v says "OK" and windows is now running.

And now for God knows what reason the power cut out again. And now the PC is totally refusing to switch on. I started getting that beep again, so i reset the cmos, and now it switches on for 3-4 seconds then off again then on again then off again then on again etc.

Anyone please help!
Could it be this 3.3 V fail. what is that exactly?

[Agent]

3.3V is just a line from the PSU, if you're PSU has been damaged by the outage, this would explain why

What PSU is it?

[sswats]

Tagan 480W.
a couple years old.
Any way to test it without having too many spares lying around?

I'm tempted to just risk it and fork out for a new PSU.

[Thorsson]

Yeah, sounds like the PSU got blown. Still, before forking out the greenbacks it would be best to try a different PSU if possible.

[iranu]

Tagan have a 3 year warranty on them.

[sswats]

I tried some cheap ass PSU and the PC posted.

Any idea how long it will take for me to send it to Tagan and get it back?

Final question, Corsair HX 520W modular for £65 or corsair VX 550W non modular for £55?

[dave87]

520w - made by seasonic, and the modular nature allows for better/easier cable management. Plus, do you actually need 550w?

[sswats]

Scan don't have the 520W. and I have free delivery with them.

so for a 520W the cheapest inc delivery is £70, or I can pick it up today from London at that price. which is a plus.

[NightshadowUK]

Yeah they do:

- 520W Corsair HX ~ £63.32

[sswats]

Oh, how did I miss that.
Thanks dude.

But yoyotech have it in stock in their london shop for £7 more and I really need it now and my brothers there now he's picking it up for me as i type this.

Thanks for all the help guys.

[NightshadowUK]

Awesome.

(God bless living 10 minutes away from Scan HQ. )

[Agent]

Make sure you get the Tagan replaced - they are good PSU's
Its not really the PSU thats at fault here. Its almost certain that when there was a power cut you had a spike / surge causing it to crap out. Get some power protection in there mate

[dave87]

Yup, surge protectors are almost a must now

I even looked into the UPS route..how sad is that?

[Agent]

UPS's are surprisingly cheap atm, I've been looking myself

Even one with a few mins protection is enough for a graceful shutdown and stopping most harmful electricity issues

[peterb]

UPS any day - IMHO these cheap "power surge protectors" are a waste of space. A UPS will protect against brownouts. You only need one that will hold up for a few minutes so that it will trigger a graceful shutdown if power is off for more than a minute or two. Well worth it.

[iranu]

Its not really the PSU thats at fault here. Its almost certain that when there was a power cut you had a spike / surge causing it to crap out. Get some power protection in there mate

Strangely enough this is what killed a new Tagan of mine a few years back. Made me get some surge protection. I wonder how many people will read this thread and think ,"mmmn must buy a decent quality PSU so that when it dies (for whatever reason), it won't take my PC with it."

Go here for RMA NanoPoint UK. Click service tab select eRMA (green one). Just say what fault you have not about the power outage.