Question Toshiba laptop won't boot windows 8.1 and has no display ?

[BusterA]

I have a Toshiba Qosmio X875 laptop with NVIDIA GeForce 670M GPU and Windows 8.1 installed. While I was using my laptop it suddenly displayed error code 0xc0000225. I tried the start Windows again. Windows would not load, but I could get into Safe Mode. While troubleshooting the no boot issue, I changed my BIOS to load defaults. I unfortunately changed the Boot Mode from UEFI to CSM. Now, I have No Display so I'm not sure how to change it back.

The laptop could possibly be reading data from the USB and CD-ROM because of the noise the CD_ROM makes and how long I have to hold the button to power down, but I have no display. I tried connecting a TV to the laptop's HDMI port with no success.

Please help?

 

[helpstar]

remove the hard drives and eventually USB drives
remove the CD
reset the BIOS (remove battery and cmos battery while charger is unplugged)

 

[BusterA]

remove the hard drives and eventually USB drives
remove the CD
reset the BIOS (remove battery and cmos battery while charger is unplugged)

I disassembled the laptop (removing the backup battery, hard drives, CD, keyboard ...) and desoldered the CMOS battery from the mother board leaving it out for 10 min. I reassembled, but I still have no display.

I noticed two square pads next to the system RAM that possibly could be a CMOS hard reset. I've seen other videos that show putting a jumper across the pads and turning on the computer would perform a CMOS hard reset. Do you know if that is the case on my laptop? and if so, does it work different than disconnecting the CMOS battery?

 

[helpstar]

maybe replacing the bios battery will work

 

[BusterA]

maybe replacing the bios battery will work

I measured the voltage on the bios battery, it read 3.25v in circuit which I assumed to be the correct voltage since all the other videos I watched used a 2032 battery for the CMOS battery.