Many Thanks
Update is that when I shut down at say 19.45 and re start some time later the laptop time re starts at 19.45
It is a Compaq Presario CQ70 about 5 years from new and the CMOS or RTC battery is basically a CR2032 type and has a life of 2-10 years depending on useage etc. Most people wont get this issue as they dont keep the laptop longer than this Battery life?
So not unreasonably it is a dead battery I Think
I can get one through e-bay for £11 from London or £5 from USofA so have orderred from London, nothing against USofA!!
Seems to be 2 screws on the hard drive cover, battery out and in and hey presto (hopefully)