Delayed boot

Windows 7 Pro 64bit. After boot up all desktop including gadgets appear but the Messenger does not/takes a long time. I disabled Messenger from the start-up list yet this did not help and the delay continued. I have read a tutorial about diagnosing delayed boot up but it is beyond my knowledge and experience. I will appreciate guidance and help in this matter. Thank you
SYSTEM DETAILS
Toshiba, Intel Mobile- Intel Core2 Duo CPU P8400 @2.26GHz, Socket P (478), Satellite Pro A300 PSAGDE-00300EN S.NO.X8171096Q
Physical Memory 3070MB, Disk Space – Disk C 149GB, Disk D 147GB
Page File 3096MB Maximum used 146MB
Motherboard Toshiba (no details provided)
BIOS INSYDE Version 2.20 12/07/2009
Memory Samsung 2048+1024MB DDR2(PC2-6400) in slot 1 and slot 2.
Video Adapter ATI Mobility Radeon HD 3470, 252MB memory- shared system memory 1278MB. BIOS date 17/03/2008. Driver version 8.634.1.0 date 29/07/2009
DIRECTX 9.0
Laptop Monitor Model LP154WX4-TLC8 Manufactured 2008. 15.4”Display. Resolution 1280x800@60Hz-Aspect Ratio 16:10, EDID Version 1 revision 3
Sound Realtek High Definition Audio
Hard Drive Hitachi HTS543232L9SA00 320GB 5400RPM Serial ATA Transfer Mode SATA 150.
DVD-RW Pioneer DVRTD08A ATA Device Firmware 1.54 Serial ATA SATA-150, 64KB Buffer.
BATTERY PA3534U-1BRS Unique ID 04D9PA3534U-1BRS
Wireless Adapter Intel(R)WiFi Link 5100AGN
Ethernet Adapter Realtek PCIe GBE
OPERATING SYSTEM
Windows 7 Professional (x64) (build 7600)
Install Language: English (United States)
System Locale: English (United Kingdom)

Sorry. I could not follow the instruction because I did not find the option
c. Click to select half of the check boxes in the Service list in the step below:-
Step 2: Enable half of the services
Will appreciate guidance as to how to enable half the services. Do I have to click each service one by one until I reach half of the list?
According to event viewer diagnostic logs the list of the services causing delayed boot is quite long to name few:-
Multi Media Class Sceduler Service
Group Policy Clinent
ProfSVC
System Event Notification service (SENS)
SVChost.exe
System Iron
Windows Audio Service.
Look forward to advice and help. Thanks

some of those are microsoft services - are you sure you ticked the box 'hide all microsoft services'?

and yes, do tick/untick half the boxes...but only the non-microsoft ones!

There are delay in the start of system, must be a virus issue. This is the biggest sign of it.

'must' or 'probably'?

Dear Rich and all members who have kindly responded.

I have done whatever was required in the instructions but was unable to pin point any specific item. I enclose details if these can be of any guide. Kindly bear in mind I am not a technical person.
Regarding virus or malware I scan my computer every day using Norton 360 and in addition today I used Microsoft Malware remover too which did not find any problem.

Thank you all very much for help and advice which is very much appreciated.
Kind regards
Kris