Warranty is guaranteed by manufacturer, Warranty centre is available nationwide, on site warranty is provided as stated on product's items descriptions.
DELL WARRANTY
Dell warranty claimed information
Dell provides on site warranty claim, call number below.
24/7 phone call support tel: 1800-88-0432
Reference: https://www.dell.com/support/incidents-online/my/en/mydhs1/contactus/Dynamic
HP WARRANTY
HP Provides on site warranty service
Call: 1800888588
JOI WARRANTY
Official warranty contact : https://www.joi.com.my/support
Warranty Hotline : 1-300-88-CARE(2273)
Technical Inquiries: 05-2424 616
General Inquiries : 1-700-817-616
Operation Hour : Monday to Friday - 9.00am - 6.00pm | Saturday - 9.00am - 1.00pm (Sundays and public holidays close)
LENOVO WARRANTY
Warranty call centre 1-855-253-6686