Hello Boerseun,
I had an Amstrad PC in 1987 (2 floppies + an added 20G HDD) and memory problems could be fixed by blowing the chips on the motherboard with a hairdryer set on medium. At work I was using a Unitron XT (clone) with a 5 MB HDD (with a Norton SysInfo of .98 of an IBM PC). We actually used an original IBM XT with an 8087 maths co-processor to do the Autocad plans for Australia's first cable TV network. Talk about slow, we had a complete defrag of the HDD in the Autoexec.bat each time the computer was turned on.
IBM Personal Computer XT - Wikipedia, the free encyclopedia
The XT was released in 1983 so you may also have an IBM PC with a retro fitted HDD (and another set of problems). You can tell by the number of slots (5=PC). Also the keyboards are different to those we use thesedays and the operating system was PC DOS 2.0 on 360k 5 1/4" disks.
Finally, as Buffy said, if you can remove the HDD cable you should get basica, otherwise the PC is probably dead as well as the HDD. The HDD should be connected to a card in one of the slots.
