Install windows WHITOUT formating, may be you lost some program configuratios, but you documents will survive.
Also try to search for systersnals boot cd or a bootable linux distribution from cd. With it you can see your hard drive and copy the documents.
Another solution is open the lantop, extract the CD and put in in a HDD case conected to a standarpc, so you can boot normally other windows and see the lantop HD to copy files.
Everything point to a windows failure, not an HD failure, so your data should be fine.
Another option is opening the gost file with other computer, not sure if gost allow it, but other similar tools yes (acronis true image, for example)
Good luck, but remember DONT do a format if you want to recover you files.