computer won't boot but has power

[BigBoi]

hello everyone,

i really need help with my old computer. everyday when i start my computer up for the first time, it turns on, but it doesn't boot up. there is no "beep" sound to indicate that it boots up. it just turns on, and all i can hear is the cpu fan spinning at high speeds..

here is the video:
http://www.youtube.com/watch?v=-5UrDw23CnQ

and usually what i do is just let it run like that, then after like 5-10 minutes, ill hold down the power button to shut it down, then turn it back on, and then it will boot up.. (just like right now, i'm using that computer to write this)

but sometimes, this happens:
http://www.youtube.com/watch?v=LygXF-9Wsjc

i've had this issue for a couple of months now but i ignored it since it happens very rarely, but it now happens everyday.

i just changed my pc case a week ago. since i needed to clean everything up after 4 years. this is an acer aspire m5711. i really need to know if the issue is the RAM, PSU, processor, or the motherboard.

my pc specs are:
intel core 2 duo e7300 2.66ghz
4GB ddr2 ram
nvidia GT630
motherboard is Acer FMCP7AM
psu is 400W (acer default)

i'm willing to buy a new motherboard and PSU to "restore" some life to this computer, as i'm planning to give it to my 5 year old daughter as her first rig. but a core 2 duo processor, i dont think so. so hopefully it's not the processor nor RAM.


thanks in advance for your time. cheers!

 

[H82LUZ73]

What the heck fan is on the cpu a vacuum lol

2 Things

1, try to re-seat the video card into the pcie slot .
2,change out the cable from the video card to the monitor.

It is acting like the memory for the video card is not heating up to output the signal.
I suspect the cable is is going bad ,I had one of my hdmi cables do this to me.switched out with the other one that came with the other card and viola no more NO SIGNAL on my screen.

 

[BigBoi]

LOL!

thanks for your time

ill try that.
but i have 2 monitors connected to my gpu, and none of them goes through hdmi.

if it is the gpu needed to be reseated, does that affect the no boot "beep" not making a sound at all?

 

[Dent1]

Read this thread, because everything I said in there applies to you too.


http://www.techpowerup.com/forums/showthread.php?t=189468

 

[ne6togadno]

LOL!

thanks for your time

ill try that.
but i have 2 monitors connected to my gpu, and none of them goes through hdmi.

if it is the gpu needed to be reseated, does that affect the no boot "beep" not making a sound at all?

when you take out gpu take eraser or other rubber part (soft up to mid hardness) and rub pcie pins at both sides of the cards.

 

[BigBoi]

Read this thread, because everything I said in there applies to you too.


http://www.techpowerup.com/forums/showthread.php?t=189468

ok, thanks...


read it, and i dont think it's the gpu, maybe i'll try re-seating it.
i'll also try working only with 1 memory stick, or swapping them, or reseating them as well.
the processor shouldnt be an issue (assuming it was not installed properly) because i only removed the fan when i switched cases/ cleaned it up.
the 4-pin power connector is connected..

the hard part is, when im trying to fix it, and it works, i would need to wait until the next day if it really works.. lol

as the problem only occurs on the first time i turn it on everyday or when i turn it off a couple of hours

 

[Jetster]

Test the case power switch

 

[ne6togadno]

ok, thanks...


read it, and i dont think it's the gpu, maybe i'll try re-seating it.
i'll also try working only with 1 memory stick, or swapping them, or reseating them as well.
the processor shouldnt be an issue (assuming it was not installed properly) because i only removed the fan when i switched cases/ cleaned it up.
the 4-pin power connector is connected..

the hard part is, when im trying to fix it, and it works, i would need to wait until the next day if it really works.. lol

as the problem only occurs on the first time i turn it on everyday or when i turn it off a couple of hours

you can implement eraser technique to ram too

 

[BigBoi]

Test the case power switch

the power switch on the case works fine.

 

[Seany1212]

Couple of things;

1) Try changing the CMOS battery, if you're turning it on and everything powers up but no initial beep then BIOS hasn't initiated properly.
Quick Edit; forgot to mention try this first, because you've said that it happens everyday the first time you boot up your computer maybe the battery is no longer storing charge.

2) Try a difference PSU, from the frantic button pressing (or is that normal? bad power button?) i'd say something power wise was not right considering how much you pressed before anything even happened.

 

[BigBoi]

Couple of things;

1) Try changing the CMOS battery, if you're turning it on and everything powers up but no initial beep then BIOS hasn't initiated properly.
Quick Edit; forgot to mention try this first, because you've said that it happens everyday the first time you boot up your computer maybe the battery is no longer storing charge.

2) Try a difference PSU, from the frantic button pressing (or is that normal? bad power button?) i'd say something power wise was not right considering how much you pressed before anything even happened.

1) can that affect the vacuum-like sound on the fan?
2) on the 2nd video, it only happens sometimes, usually when that happens, it will successfully boot.

your cmos theory makes perfect sense. i'm going to try that. i have a spare cmos battery here somewhere.

 

[BigBoi]

you can implement eraser technique to ram too

i'll try that as well. so you guys don't think it's the mobo or processor?

 

[Seany1212]

i'll try that as well. so you guys don't think it's the mobo or processor?

Motherboard I think could still be a possibility, but i think the processor is fine otherwise there would be more sinister problems like the computer not running at all.

 

[BigBoi]

Motherboard I think could still be a possibility, but i think the processor is fine otherwise there would be more sinister problems like the computer not running at all.

yeah, exactly my thoughts... i just want to make sure that it's not the processor nor the memory.

 

[Deleted member 24505]

yeah, exactly my thoughts... i just want to make sure that it's not the processor nor the memory.

You could also go to the user cp and fill in your specs

 

[BigBoi]

Couple of things;

1) Try changing the CMOS battery, if you're turning it on and everything powers up but no initial beep then BIOS hasn't initiated properly.
Quick Edit; forgot to mention try this first, because you've said that it happens everyday the first time you boot up your computer maybe the battery is no longer storing charge.

already changed the cmos battery, and cleaned and re-seated the gpu & memory modules, and it still happened. what do you guys think?

 

[Nabarun]

From the 2nd video it appears you need a new, better PSU. Get a Seasonic 520w or 620w before there's damage to your other components. The motherboard/hdd may be damaged already, but try a different PSU, I hope it will solve all your problems.

 

[maksic87]

IMHO i would bet on your mobos VRM and and some bad caps. Best way is to try with a different motherboard if you have the opportunity to barrow it from someone. Maybe caps on PSU but that wouldn't explain the vacuum cleaner noise from the GPU. The least possible cause may be a faulty GPU but I doubt that.

Good luck in resolving this and reapply here, i'm interested in the solution if you find one. Thank you.

 

[de.das.dude]

sounds like a bad motherboard to me.

 

[BigBoi]

IMHO i would bet on your mobos VRM and and some bad caps. Best way is to try with a different motherboard if you have the opportunity to barrow it from someone. Maybe caps on PSU but that wouldn't explain the vacuum cleaner noise from the GPU. The least possible cause may be a faulty GPU but I doubt that.

Good luck in resolving this and reapply here, i'm interested in the solution if you find one. Thank you.

i dont think it's the GPU as well. i certainly hope it's not the processor...
sure, i'll let you guys know when i've fixed it.

by the way, what's VRM?

sounds like a bad motherboard to me.

me too, and hopefully that's it... if i'm going to buy a new motherboard, hopefully everything will be fixed

 

[xBruce88x]

my pc started doing this a while back, turned out to be the power switch. so now i turn it on using a screwdriver to momentarily jump the pins on the mobo header.

the vacuum sound is probably the fan running at full speed since the temp sensors or bios fan controller haven't kicked it yet until after POST

could also be the motherboard...

 

[itsakjt]

I think the PSU is at fault. The capacitors might have gone weak and takes too much time to charge up. Once charged, the thing works the 2nd time. The worst case is the motherboard. I had these kind of problems on my old computer because the Power good signal of my PSU was getting weak and finally died.

 

[xBruce88x]

possible, especially if he's had that power supply since that core 2 came out.

 

[Nabarun]

psu is 400W (acer default)

Unless the OEM is a really good one like Seasonic, and has 80+ rating, there is very little chance for a 400w PSU to keep working flawlessly for so long under such load. And not starting every time at the first push of the button is tell-tale sign of the PSU failing. I have seen many cases like this, and even experienced myself. I think you should first try a different PSU first. Just borrow a decent one from a friend or a neighbor and see if the PC starts without any problem.

 

[shovenose]

the fact that it only works after warming up makes me suspect capacitors on psu, motherboard, or video card.