This is my first time here and hope someone can help. I have a HP pavilion tower which had been running with no problems. I recently updated to windows 10 and part way through the installation we had a power cut. when power was restored the PC would not boot regardless of what I tried.
My young IT guy at work has looked for me and found that if we remove the cmos battery for a day and remove the graphics card we can get the machine to boot up, once the cmos battery only is refitted. It will then continue to boot as long as we use the restart function. If we power the unit down and start it again it will not boot up. Remove the cmos battery for a day and again it will boot up.
We believe the graphics card may have a problem so we are running on the on-board graphics only. We cannot understand why it wont boot from cold. I am open to any suggestions.