I finally had some time for my new old friend last week end. I had a few problems including the disk which is not recognized each time by the bios. No bad sectors. It may be the disk controller card. I also had problems with the Cirrus logic graphics card which is an ISA VLB. I removed all the memory chips that were on removable slot and deoxidized everything. DOS 6.22 and Windows 3.1 are now running great. Next step is to run some old games
The IBM 5150 is perhaps the most influential computer in history. Launched in 1981 under the name Personal Computer, the PC marked the beginning of an architecture that became the industry standard and brought innovations and features that continue to be present in the computers we use until today.