Lenovo desktop reset during bootup and will not boot up now

[unregistered]

When turning it on, pressing the power button, the hard disk spins and the fans work, but the screen stays black.

Something must be corrupted in the bios... I don't remember how to reset the bios.    Please help me.

p.s. I'm sorry, I don't remember what type of Lenovo desktop it is.

[unregistered]

Last night, while on the internet, the power dimmed... all of the lights became dimmer for a few seconds... and my computer reset and began booting up; after the lenovo logo appeared the lights dimmed again and my computer reset again; this dimming happened a third time and I realized that I needed to turn off my computer.  I'm wondering if the bios isn't corrupted like I thought, but maybe could the problem be due to the cmos battery?  Does repeated booting ruin cmos batteries?

Thanks for reading through this... just thinking. Maybe I just need to buy a new CMOS battery?

[patio]

I would...

However it sounds like flakey power at your place is causing all the issues...

[unregistered]

If this helps... it is a Lenovo H50 Desktop PC, AMD A8 Quad-Core, 8GB Memory, 1TB Hard Drive, Upgraded to Windows 10.

@patio Yes, that is the cause of the issues. Though, that's never happened before and today has been like normal.

[patio]

Replace the battery anyways...Part # CR 2032...available anywhere.

Remove all power sources when doing so.

[unregistered]

 Thank you patio!    Will do that now.

[patio]

Keep us posted and good luck...

[unregistered]

With that new CR2032 battery my computer is working great again!  Thank you so much for the help patio!

[patio]

Great News...