Lenovo Z61m won't boot - no beeps no nothing - have tried quite a bit of things [ Edited ]

[gummiost]

On Friday the 13th of April my old friend here wouldn't boot anymore. The video I've linked to below shows what happens when I turn the power on. The screen stays blank at all time and HD does not engage at any point. Any suggestions to solve this problem would be greatly appreciated!

http://www.youtube.com/watch?v=ibUS6FamIsc

What I've tried so far and still haven't found the problem:
- Change RAM (had the original still after upgrade) = RAM not dead.
- Pull out harddrive and test externally on another computer (+ virus scan - mostly because I was getting paranoid about my laptop dying on Friday 13th hehe) = HD not dead or infected.
- Pull out power supply, battery and RAM to provoke RAM failure beep series = motherboard not dead.
- Check voltage on CMOS battery = not dead.
- Boot from XP cd = the drive spins up for a short while and down again, but other that that nothing happens.
- Cursing at the sky = I'm at my wits end with this.

UPDATE:
- Pull out CMOS battery to reset bios (forgot that one, sorry)

[Mornsgrans]

Remove battery and power supply and press power-key for 30 seconds

Attach power supply and turn on (leave battery detached)

If successful, attach the battery and test its health in the power manager.

If the battery is dead, leave it detached, it may cause damages on the system board.

[gummiost]

Thanks, Mornsgrans! Will try that this afternoon and see. Fingers crossed!

[gummiost]

Didn't work at all. Any other ideas? Btw sorry for the delay. Stuff came up...

[Mornsgrans]

A few more you can do:

• Check the USB ports whether the pins have a short and/or the plastic bridge is missing.
• remove all drives and test computer
• remove one expansion card (like WLAN, modem, bluetooth etc.) after the other and test the computer

[gummiost]

Ok, sure thing. Thanks man! What plastic bridge are you thinking of? I'm not quite sure what you mean. Have already tested with out harddrive. But I'll try pull out all the other stuff too.

[Mornsgrans]

---

gummiost schrieb:
 What plastic bridge are you thinking of?

---

I mean the plastic piece in the USB port:

http://i.imgur.com/oO76m.jpg

[gummiost]

Oh sure thing!