Hi. Can anyone help me diagnose this problem. Have an Asus laptop, great spec but 7 years old. Works fine still in all respects, but on start up certain keys do not work (s, 5, 6 and just a few more). After a while, and after booting up appears to have fully finished, they come back on line and work again fine, but this can take 5 minutes or so and they work again at no apparent trigger point. I have done a Windows 10 reinstall and stripped back all the software to try to remove any software conflicts and the laptop itself is working as good as I would expect it to at its age and an old i5 processor - but losing a small handful of keys intermittently at start up for no apparent reason is really annoying and makes me think I am going to have to shell out for a new laptop. Such a shame as this one has an i5, 6gb ram and 17" screen and I love it in all other respects and still is fast enough to be totally usable. Any pointers gratefully received.