For example this to me means the person who installed Windows may have tried to avoid BIOS and drivers that apply to this machine. That is, if we install or upgrade Windows we have the usual work to perform. This work has not changed since about 1995.
I really hope someone can help. I am running Windows 10 since it was first introduced, on an Acer Aspire 5551 , with no problem. Yesterday, when browsing, the screen reduced in size. When I did a restart, I had a full screen, but it was stretched, i.e. circles became oval, the typeface was enlarged and not as clear as normal. If I restore to an earlier time/date, it goes back to normal, but after about an hour the problem re-occurs (I have done this numerous times). I have tried numerous suggested fixes to no avail. I would really appreciate any suggestions to solve this problem.