Hi CDF62,

First of all, run the Dell Diagnostics to check the hardware functionality. Power off the computer -> restart the computer, press 'F12' key on the Dell logo -> Select 'Diagnostics' from the boot menu.

Then boot the system into Safe Mode and check if you experience the same issue. Tap F8 4-5 times, choose Safe Mode in the Advanced Boot options menu.

Also, disable unnecessary startup items using the MSCONFIG tool.

Thanks and Regards,
Appu S