Reinstalling Windows

Of all the people I know, Taras is one of these those I remember the longest [? will remember the longest/ remember the most?]. He lives in the same block of flats / apartment building as I do, at a distance of one entrance two doors down from me (i.e. I live at entrance number 2 and he lives at entrance number 4). Since I'm a software developer, I'm conversant with computers, and he always turns to me when he needs help with his [computer].

So, [comment - comma is OK here but not necessary. In English we often use commas in the place we would pause if we were speaking out loud. It sounds more natural to me without a pause here (I know in Russian you have different, stricter rules). As a test, try reading it out loud] he recently asked me to look at his laptop, which had failed to boot up. He told me he thought the operating system called for needed reinstalling. Also he thought that cleaning [the notebook's insides] ["the inside of the notebook" is better, "insides" sounds like the insides of a person or animal!] of the dust would do it a power of good, as I had explained to him that the reason why the machine overheated so much was dustiness. But, having brought the laptop to me, he asked me not to take it apart. Well, so much the better: I didn't fancy wiping the chips.

I started to install Windows 7, and soon ended up with an error message. I tried again. The same. Google told me that it might had been either a virus in the boot sector or the damaged hardware. I called up Taras and filled him in. Then I tried to install Windows XP, but the outcome was the same. I handed over the laptop computer to Taras, planning to download the antivirus software at work where the internet connection speed is high enough for this job.

But on the next day, Taras told me that some guy managed to install Windows XP on the notebook. They put down the success down to cleaning the hardware from the of dust. I still don't know if either it did the trick or a sophisticated repack of Windows succeeded/worked managed there where my official distribution disk failed. Though, Taras was disgruntled though [if you want to put something at the beginning of the sentence, use 'however'], because he was charged 200 UAH for the work. I wouldn't take any money from the chap. After turning it over in his mind, he came to the conclusion, that it was too steep for the work that took up less than half an hour, most of which could be spent on doing other work [not sure what this last part really means - that even < half an hour was too long as the guy was wasting his time?]. It's worth mentioning that he is one of the people who don't hesitate to exerciseing their brawn while standing their ground. I'll have to have developed this quality so that I'll be able to protect my future wife and children from danger. But this quality has costed him at least a foretooth and a few visits to the ICU by reason of due to cerebral injury in the past. My neighbour / neighbor paid 150 UAH [so he bargained him down?]. A few hours later, he met by chance another guy by chance who told him that, in fact effect, it was him who had installed Windows, for 50 UAH (~ $6), and so the first guy appeared to be a middleman.

Hi Ivan, very good work, a lot of it souds native. I made a lot of comments mainly to polish it.

Reinstalling Windows

Of all the people I know, Taras is one of these whom I remember the longest most. He lives in the same block of flats / (don't write both, just choose one, people will understand you :)) apartment building as I do, at a distance of one entrance just one entrance away from me (i.e. I live at entrance 2 and he lives at entrance 4). Since I'm a software developer, I'm conversant (good word, another one that I haven't seen before!) with computers, and he always turns to me when he needs help with his computer.

So, he recently asked me to look to at his laptop, which had failed to boot up. He told me he thought the operating system called for reinstalling. Also He also thought that cleaning ridding the notebook's insides from the of dust would do it a power of good, as since I had explained to him that the reason why the machine overheated so much was dustiness. But, having brought the laptop to me, he asked me not to take it apart. Well, so much the better: I didn't fancy wiping the chips.

I started to install Windows 7, and soon ended up with an error message. I tried again. The same Same result. Google told me that it might had have been either a virus in either the boot sector or the damaged hardware. I called up Taras and filled him in. Then I tried to install Windows XP, but the outcome was the same. I handed over the laptop computer over to Taras, planning to download the antivirus software at work where internet connection speed is was high enough for this the job.

But on The next day, Taras told me that some guy managed to install Windows XP on the notebook. They put down credited the success to cleaning the dust off the hardware from the dust. I still don't know if either it whether that did the trick or whether a sophisticated repack of Windows managed there worked where my official distribution disk failed. Though, Taras was disgruntled though, because he was charged 200 UAH for the work. I wouldn't take any money from the chap. After turning it over in his mind, he came to the conclusion, it was too steep (not sure what you mean by "steep" here) for the work a job that took up less than half an hour, most of which could be spent on doing other work (or: most of which could be spent doing other work). It's worth mentioning that he is one of the people (better: It's worth mentioning that he is the kind of person) who don't flinch from exercising their his brawn while standing their his ground. I'll have to have developed develop this quality so that I'll in order to be able to protect my future wife and children from danger. But this quality costed him at least a foretooth and a few visits to the ICU by reason of cerebral injury in the past. My neighbour / neighbor paid 150 UAH. A few hours later, he met by chance happened to meet another guy who told him that, in effect, it was him who had installed Windows, for 50 UAH (~ $6), and the first guy appeared to be a middleman.

You are very good at phrasing things. You use some pretty complex structures. There are some flaws when it comes to tenses and prepositions, but you seem very proficient at a high level of English! Very professional syntax.