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Sun, Feb. 23rd, 2014, 11:43 am
Urgent advice needed! Desktop computer won’t turn on this morning.

Originally published at VolkStudio Blog. You can comment here or there.

It had worked fine for several months, now won’t even turn on. Indicator light on the external card reader was on until I flipped the power switch on the back off-on, and now that’s off also. Not sure if there’s some internal reset.

I have to leave for a trip tomorrow morning and have two projects that have to be done today. I can try to do them on my laptop, but there’s a third project requiring files from the main computer that I cannot access. Advice on making this work would be much appreciated.

I tried to reach my competent local friends, no luck. This is a very time-sensitive issue, so any leads on who can help right away would be appreciated. The power supply is 1050W and so I can’t get a local replacement today. Not even sure if that’s the culprit, could be a bad switch — I have no way to test it.

Sun, Feb. 23rd, 2014 06:02 pm (UTC)

Try unplugging from external power for 15s or so (the power button on the front does not completely cut power to the motherboard). Try disconnecting unnecessary external devices. There is a CMOS reset, but you'll lose your CMOS/BIOS configuration; on some computers this is a button on the back, otherwise it's a jumper you'll have to read about in the motherboard's manual.

1050W seems overkill to me. Do you have multiple CPUs? If not, you could probably make do with a smaller power supply. I've recently been doing some testing on this subject. I've found that my i7 system never draws more than 200W when doing the most CPU intensive tasks, and its 650W power supply is rather small by today's standards.

Sun, Feb. 23rd, 2014 06:04 pm (UTC)

I have a large RAID in the computer (and another external RAID), hence the large power supply.

Sun, Feb. 23rd, 2014 06:34 pm (UTC)

How is your RAID array configured? RAID0?

Sun, Feb. 23rd, 2014 06:41 pm (UTC)

Assuming the power outlet itself is fine and the surge protector/power strip the computer is using is fine and you also unplugged the power cord your computer uses from both the outlet and the computer and let it sit for 30 seconds before plugging it back into both ends and it still doesn't work...

It sounds like a motherboard or power supply issue. I'd find out what PSUs are compatible with your computer's motherboard (same connector types, equal or greater wattage, and same form factor - ATX, tower, mini ATX, etc.), get one from the local Fry's/electronics store, and swap them out first. Swapping PSUs is relatively easy, but watch a video on how to do it first. The video should just be 5 minutes; the actual install time will be 10-20 minutes.

If it still doesn't work then get a replacement motherboard of the same make/model as the one you have and swap 'em out. Have a local tech do it or at least have a video ready and study your motherboard manual's instructions on how to do the procedure. After the procedure you will have to boot into the BIOS and configure the RAID setup again the way it was before to tell your new motherboard how to read the hard drives properly.

If you know what RAID configuration you have (RAID 0 vs. RAID 5, etc.), this will inform your options (if any) for accessing the data via a hard drive reader or other methods if you can't get your desktop working in time.

Sun, Feb. 23rd, 2014 07:00 pm (UTC)

скажи какой у тебя тип рейда

и узнай где поблизости можно купить внешний корпус для винта

возможно, можно просто воткнуть во внешний корпус диск из компа и считать данные на ноуте

Mon, Feb. 24th, 2014 05:18 pm (UTC)

Найти любой иной стационар и заовнить на время его БП. И протестируете и файло перенесете.

Mon, Feb. 24th, 2014 07:58 pm (UTC)

Unplug everything except the mouse, keyboard, and monitor. One time I had a powered usb hub go bad, and it was allowing enough power to backflow into the usb port, that it was preventing the mobo from accepting the 'turn on' signal from the main power switch.

Sat, Mar. 1st, 2014 02:14 pm (UTC)

That's not one I would have tried for a power supply issue. Added to my trick bag now.

Sun, Mar. 2nd, 2014 03:36 am (UTC)

Ever figure this one out?