mike

If you are sure all is working then BIOS is looking for incorrect video port as in VGA, HDMI, Display Port or DVI. Depending on motherboard hold done the key for BIOS/UEFI. It is <Del> on my Gigabyte one. Once in BIOS don’t use “Auto” for port but select the actual one. That should do it. If not do the same on the monitor, as well, to manually match the port. Funny, I was just having the same problem today. BIOS fixed mine.

Have you tried these standard solutions yet? ·         Soft Power Cycle: 1.       Press and hold down the power button for 20 seconds or until the computer shuts down. 2.       Press the power button to turn the computer back on 3.       If this did not resolve your issue continue with the Hard Power Cycle procedure  '' ·         Hard Power Cycle (For computers that have removable batteries): 1.       Unplug the computer from the AC adapter. 2.       Remove the battery from the computer. 3.       Press and hold the power button for 20 seconds. 4.       Re-Install the battery. 5.       Re-Connect the AC adapter. 6.       Press the power button to turn the computer back on   ·         Look for tiny hole the size of paper clip on the underside. This is a reset on some Toshibas. Stick in end of paper clip for a few seconds.   ·         Reset BIOS by shorting contacts marked JCMOS.

With the battery removed and power supply disconnected, SLOWLY take it apart again and SLOWLY reassemble making sure all the ribbon cables are correctly inserted.

Just buy “paper path cleaner” sheet and use as directed until prints cleanly

In “Advanced Options” click on “Startup Settings” and select “Enable Safemode” and see if it boots up. If it does problem is minor. Try rebooting and if still a problem then use “System Restore” from the “Advanced Options” . Worked on my computer this morning. You can try changing the order above to “System Restore” and if it doesn’t work then “Enable Safemode” and reboot. If it boots to the Desktop O.K then just reboot normally. Good luck.

Go to ifixit page: Nikon D800 Repair and download the manual. Identify your part’s name and then in Google type “Nikon D800, the part name”. You will then see list of web sites that sell the part. Nikon may even have it on their website.

Just upgrade the RAM. It has two slots for up to 16GB.

Try downloading “Ccleaner” or “Advanced System Care” and running to eliminate minor software issues. Majorgeeks is a good, safe download site: https://www.majorgeeks.com/ Have you run Windows Update ?

Hi Brent, You are lucky your AMD CPU is 64bit. 4GB RAM is fine for most basic activities. There are PCI Express ports for graphics card and even a USB 3.0 upgrade, Before doing anything else update the BIOS. I believe 1.08 is the newest: https://www.dell.com/support/home/nz/en/... I’m presuming you downloaded the ISO file for Windows 10 64bit from Microsoft. Don’t use the DELL version - limited drivers, etc. Download Rufus 2.18 last version for Vista and Window2s XP https://rufus.ie/downloads/ Run this with a USB thumb drive in a USB port. MBR Partition Scheme and the USB must be NTFS formatted. Power on and tap F2 at Dell logo. Under “Main” change Legacy Diskette drive A to “None”. Also, change the first boot priority to “USB drive”. Hit F10 to” Save and Exit”. Remember to change the first boot priority back to “hard drive”. I may have left a small step out so be sure to carefully read the screens in the BIOS. Let us know how it goes and don’t hesitate to ask more questions.

Try lifting out and re-seating the card in its slot. Try uninstalling and re-installing the driver for the card. Note: You might try using DDU_Display Driver Uninstaller app to completely remove all traces of old, possibly corrupt driver. If neither helps then replace card.