Frump...... Too many challenged items come back with no status. For the "task manager" symptom, I expected to see a bonafide hit for malware. I feel that experts @TS give better scrutiny to the HJT log. Hang in there.
I suggest
Malware Removal Prelims
Suspicious -
C:\Documents and Settings\Sai\Local Settings\Application Data\Google\Update\GoogleUpdate.exe
Open to Debate - strange alpha characters are a warning fllag (imho)
O2 - BHO: Thunder AtOnce - {01443AEC-0FD1-40fd-9C87-E93D1494C233} - C:\Program Files\Thunder Network\Thunder\ComDlls\TDAtOnce_Now.dll
O2 - BHO: ThunderBHO - {889D2FEB-5411-4565-8998-1DD2C5261283} - C:\Program Files\Thunder Network\Thunder\ComDlls\xunleiBHO_Now.dll
O8 - Extra context menu item: ʹÓÃѸÀ×ÏÂÔØ - C:\Program Files\Thunder Network\Thunder\Program\geturl.htm
O8 - Extra context menu item: ʹÓÃѸÀ×ÏÂÔØÈ«²¿Á´½Ó - C:\Program Files\Thunder Network\Thunder\Program\getallurl.htm
O8 - Extra context menu item: Ìí¼Óµ½QQ±íÇé - C:\Program Files\Tencent\QQ\AddEmotion.htm
O9 - Extra button: ???¡¥??¨¤¡Á5 - {09BA8F6D-CB54-424B-839C-C2A6C8E6B436} - C:\Program Files\Thunder Network\Thunder\Thunder.exe
O9 - Extra 'Tools' menuitem: ???¡¥??¨¤¡Á5 - {09BA8F6D-CB54-424B-839C-C2A6C8E6B436} - C:\Program Files\Thunder Network\Thunder\Thunder.exe
Open to debate - music service
O18 - Protocol: KuGoo - {6AC4FBC7-AA38-45EC-9634-D6D20B679EFC} - C:\WINDOWS\system32\KuGoo3DownXControl.ocx
O18 - Protocol: KuGoo3 - {6AC4FBC7-AA38-45EC-9634-D6D20B679EFC} - C:\WINDOWS\system32\KuGoo3DownXControl.ocx
Consult
HJT Tutorial for user cleanup actions for checkmarked items.
