Samsung ML-2851N prints blank pages randomly

Problem: Blank pages instead of documents started to appear after changing it's toner

The same documents print ok a few times and then randomly it prints as blank page(s).

Problem was resolved by replacing the toner from the same type of printer.
And furthermore, the toner worked OK on that other printer.
Reinstaling drivers from Samsung official download didn't help, neither restarting PC nor printer.
All toners are original Samsung toners.

Windows Security Center

Problem: Security center can't be accessed

Workaround:
in run - services.msc, it can be disabled.
Automatic updates also can be managed in services as well.

"A network cable is unplugged"

Problem: Cable is ok, another network card is inserted, and no network

DLink Green ethernet switch was to blame.
Once plugged into another switch, it worked ok.

Microphone in Skype is not working

Problem: User can't be heard in skype

Cam with mic was used. And cam has microphone integrated.

Skype - Tools - Options - Audio settings -
from Microphone drop-down menu select
the other device, for example Audio device

After forwarding mail, all Words are blank

Problem: When clicking forward mail, there is an error message and all Words start to be blank

Error is:
Word is unavailable, not installed, or is not the same version as Outlook

Solution is:
Microsoft Outlook 2003 - Tools - Options - Mail format - Message format

uncheck:
Use Microsoft Office Word 2003 to edit

Outlook is not showing pictures

Problem: Security settings are changed as advised for this problem, still no picture in mail

Registry:
HKEY_CURRENT_USER
Software - Microsoft - Office - 11.0 (or 8) - Outlook - Security

delete
OutlookSecureTempFolder

(it will recreate itself afterwards)