want to install my copy of Windows 7

Yes I have the correct bit version.No I don't know the exact model number.Where can I find it?Two days now I'm googling for realtek ethernet drivers.I have found about 6000 drivers,I can't test'em all.Yes as I previously said my network cable is plugged all the time into my PC and driver installation is enabled.But how can PC connect to internet in order to download something (drivers,updates,whatever) if the network adapter drivers are not installed and are absolutely necessary to make a connection?
Finding drivers by using hardware ID was not hard task,HP provides all the drivers for this computer but only for 8th OS.
I ensure you that I am trying to fix this for two days now and I don't give up after the first try.I have hit so many queries in Google,I have read your guides (not once),I have booted and rebooted my PC literally about 100 times since yesterday but still no luck..

What is the hardware ID for Ethernet and wireless drivers in Device Manager? I said to post it if you couldn't find the driver by Googling it.

You are sure no Network Drivrs are installed there?

If not they will be showing in error with a ! Mark. May be listed as Network Controller

Greg you really ROCK!!!
Yes I am sure that there were no drivers installed 1)Network diagnostics said that and 2)In device manager there was no entry "Network adapter" or sth like that, instead there was one entry "Other" which contained network adapter (named Realtek PCIe FE Family Controller and not RTL8106) and couple other things (don't remember now),all marked with "!" in yellow triangle.
After googling for hours I found the ethernet controller's ID .I was actually searching for ID of my whole machine. On one site I found all the individual hardware parts' IDs that are installed on my computer, organised in one list.Here helped your hint (google for hardware ID,I thought you meant whole PC's ID and not network adapter's one,in previous reply you cleared this well but I found the solution before reading that)So the network adapter's ID was RTL8106.From here and on it was easy,I googled for the particular driver,downloaded and installed it.After that internet came to my system,windows update downloaded some other drivers that were missing or out of date and here I am typing this post from my fresh win7 OS.

VERY VERY VERY BIG THANK YOU!!!

You were very helpful,I really appreciate that!!!
Best regards!!

Good work!

You can click the blue links for illustrated tutorials like the one Id posted for Hardware Identification

Did you get your wireless adapter via Windows Update?

What drivers are still missing?

No, I dont have wireless card ,only ethernet connection. None driver is missing now. The graphics related driver was missing or outdated(aero theme wasn't working properly and I could not use full resolution of my monitor) at the moment that I installed network controller driver. After that windows automatically updated everything

Good work Warrior!

Thanks!!! what would I do without your guidance?