|"I copied and pasted the details again"|
There must have been something in whatever you attempted to paste that's not agreeable with the site. Just post the model number, that's all we need to know. There should be a label or sticker somewhere on tower.
I was running Win7 on a 10 yr old laptop (HP zv6000) with just 1.5GB RAM & the performance was acceptable but I eventually switched to Linux (Zorin OS). If your computer has enough memory (at least 2GB) or can be upgraded to that much (or more), it will most likely run Win7. I would stay away from Win8 until they get the bugs out of it. The next release should be the one to get, or just wait for Win9 which is just a year away.
message edited by riider