Chosen Solution

no display on any monitor that i have tried connecting to my Dell T1650. Issue happened shortly after switching from legacy to UEFI boot. I went into advanced startup afterwards and selected boot to command prompt because pc was booting straight into windows 10 and skipping BIOS. Now i get a “no signal detected” no matter which cable or monitor i plug into the desktop. Computer comes on, and the hard drive lights come on as well as cpu fan, graphic card fan. etc. No beep code unless i remove all 4 memory sticks which then gives me a 1 3 2 beep code while screen is still not turning on this is what i have tried cleared cmos 5+ times by removing battery (even left battery out overnight)swapped out video cables with working cablesswapped out video cards with known working cards (3 different cards). tried different cards on both pcie x 16 slots to no availtried using onboard graphic card with graphic cards removedtried different available video inputs (vga hdmi dvi)swapped out the power supply with a new oneclear cmos via motherboard jumpers 5+ times ( tried with jumper on RTCRST overnight even)tried 4+ different monitorsreseated all memory sticks (added them 1 by 1 on and on different slots

removed all hard drives, added them back 1 by 1

swapped out power cords with known working cordstried different monitors ( 3 working monitors)left monitor plugged in overnight with computer running… next morning..still no signal doubt its a cpu issue?

Swapped out my motherboard now all is well.

If the issue started when you switched from BIOS to UEFI, then the fix may be to restore the BIOS configuration back to its defaults. It is impossible for a computer to skip BIOS and go straight to Windows because BIOS is what activates Windows when you first turn the computer on. Try turning the system on and pressing F2 quickly and repeatedly before the Windows splash icon appears. This should get you into BIOS so you can undo the changes that were made right before the issue started.